Combined condenser and resistance unit



Patented Mar. 30, 1926.

UNITED STATES 'WILLIAM H. FRASSE, 0F NEWARK, NEW JERSEY.

COMBINED GONDENSER lAND RESISTANCE UN application mea Haren e, 1925. serial No. 13,469.

To all whom it may concern:

Be it known that I, WILLIAM I-I. FRAssE, a citizen of the United States, residin at Newark, in the county of Essex and tate of New Jersey, have invented certain new and useful Improvements in Combined Condensers and Resistance Units, of which the following is a specification.

My invention relates generally to condensers as separate elements and also in combination with resistance or other electrical units.

I have found it practicable, in the production of small capacity condensers, to

form the condenser members of helical windings of insulated wire, arranged in close relation.

Tests have further demonstrated that the capacity of such condensers may be accurately varied by increasing or decreasing either or both the length ofthe windings and the diameter of the wire.

In producing condensers as separate elements, enamelled wire is preferably emloyed, vas it permits the windings to be brought into closer relation but, if preferred, cotton or silk covered wire may be use In forming the condenser members, the wires may be parallel or double wound in a single layer upon a core of glass or other insulating materlal, or bank winding may be employed to reduce the length of thel condenser the inner coil forming one member and the outer coil'the other.

A small compact and convenient combination of a condenser and resistance may be produced by utilizing the above condenser core of glass or other insulating material 40' as the container for the resistance element and connecting them through the terminal metallic caps either in parallel or series, as occasion may require.

In the. accompanying drawings, I have 15 shown several constructions suitable for carrying my invention into effect.

In the drawings:

, Fig. 1 is a view inelevation, partly in section, showing the -combination of a condenser and a resistance, in which .the units or elements are connected in multiple;

Fig. 2 is a detail view showing the double orparallel method of` winding the wires 1 forming the condenser members;

Fig. 3 is a similar view showing bank w1nd1ng;'

Fig. 4 shows the condenser as a separate unit, and

Fig. 5 is a wiring diagram of Fig. 1.

Referring now to the drawings, 1 represents a coreor glass or other insulating material, preferably tubular and of a length suitable for containing a predetermined number of turns of insulated wire of certain diameter.

'Ihe winding is formed of two lengths of wire 2 and 3, which may bevarranged 1n parallel relation, as a single layer upon the core, as shown in Fig. 2, or bank wound, as shown in Fig. 3, with the inner coil forming one condenser member and the outer coil the other condenser member.

As the length of the coils and the diameter of the wire determine the capacity of the condenser, the form of the windin that is whether parallel or bank is to e employed,-is a matter of engineering judgment, depending upon circuit requirements, design, etc. a

Enamelled wire is referred over cotton, silk or other covere wire, as it permits closer relation of the turns, has superior wearing qualities and presents a better appearance in the finished article.

A small capacit condenser, constructed as above described, ands itself and is particularly well adapted for convenient and compact combination with a resistance element, as shown in Fig. 1.

As illustrated in the drawing, the resistance 'element 4 is enclosed in a container in the form of a tube of glass or other insulating material closed at the ends by metal caps 5, 5, which serve as contact terminals for connecting the resistance element in circuit.

By utilizing the glass container of the resistance element as the core for the condenser windings and the metal caps as the condenser terminals, I am enabled to produce, as a single compact article, a multipleconnected grid leak and condenser for use in radio receivers, to replace the -separate elements, now commonly employed, which require separate sets of spring contact clips and occupy considerable space in a crowded assembly ofthe various receiverunits.

n The above `4 reference to the well'lmown neven?? rid leak and condenser of n radio receiver, windings 'of Wire copacitatvely disposed 1s not to loe understood as limiting the applirelative to eech other, n tuloe of non-concation of the invention, as it may obviously ducting material forming a. support Jlor the be readily adapted for other circuit uses by windings, a resistor element mounted in the 5 changing the values of the units combined. tubenanrl closures for the ends cit the tube Having, therefore, described my mmm forming contact terminals for the conolers tion, ll clnimnml the resistor element.

A. condenser consisting ot tvvo loelicel WlUhLllAM lil, FRASSEb'- 

